Wikidata:Property proposal/EDItEUR Thema id
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EDItEUR Thema id[edit]
Originally proposed at Wikidata:Property proposal/Authority control
| Represents | EDItEUR Thema (Q122440155) |
|---|---|
| Data type | External identifier |
| Domain | item |
| Allowed values | [A-Z0-9-]+ |
| Example 1 | Solar System (Q544) -> PGS |
| Example 2 | Solar System (Q544) -> 1ZM (object has role: qualifier) |
| Example 3 | zydeco (Q245296) -> 6XZ |
| Example 4 | Berlin (Q64) -> 1DFG-DE-BE |
| Source | https://www.editeur.org/151/thema |
| Number of IDs in source | 8646 (reference https://www.editeur.org/files/Thema/1.5/v1.5_en/20230707_Thema_v1.5_en.xlsx) |
| Expected completeness | always incomplete (Q21873886) |
| Implied notability | Wikidata property for an identifier that suggests notability (Q62589316) |
| Formatter URL | https://ns.editeur.org/thema/en/$1 (search formatter: https://ns.editeur.org/thema/en?search=$1) |
| See also | Dewey Decimal Classification (P1036), Library of Congress Classification (P1149), Wikidata:Property_proposal/BISAC_Subject_Heading |
| Applicable "stated in"-value | EDItEUR Thema (Q122440155) |
| Single-value constraint | yes (with separator "object has role") |
| Distinct-values constraint | yes |
| Wikidata project | WikiProject Books (Q8487081) |
Motivation[edit]
EDItEUR Thema is the major subject classification in the book industry. Codes starting with a digit are qualifiers, i.e. should not be used alone to classify a book. Unlike MeSH qualifier ID (P9341), I think it's easier NOT to make a distinct property for "qualifier" but to use the WD qualifier "object has role" to distinguish them when needed (see the example about "Solar system").
Here is the complete list of identifier patterns (d=digit, A=uppercase alpha), with counts:
20 A
145 AA
1125 AAA
1503 AAAA
451 AAAAd
47 AAAAdd
6 d
57 dA
48 dA-AA-
156 dA-AA-A
284 dA-AA-AA
122 dA-AA-AAA
61 dA-AA-AAAA
332 dAA
95 dAA-AA-A
15 dAA-AA-AA
478 dAAA
456 dAAA-AA-A
837 dAAA-AA-AA
1100 dAAA-AA-AAA
283 dAAA-AA-AAAA
22 dAAA-AA-AAAAA
2 dAAA-AA-AAAAAA
454 dAAAA
189 dAAAA-AA-A
159 dAAAA-AA-AA
51 dAAAA-AA-AAA
111 dAAAAA
20 dAAAAA-AA-A
16 dAAAAAA
Vladimir Alexiev (talk) 15:27, 12 September 2023 (UTC)
Discussion[edit]
Support seems good to me. I was unsure about your "qualifier" case but I think you explained it well enough, this seems like an adequate solution. ArthurPSmith (talk) 19:29, 14 September 2023 (UTC)
